 |
| cyclical stress: 31 phrases in 10 subjects |
| Desert science | 1 |
| Electric machinery | 1 |
| Engineering geology | 9 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Polymers | 3 |
| Space | 2 |
| Technology | 7 |
| Wind Energy | 3 |
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